It seems the current choices available to the DIY crowd (in rough permeability) are:
1.1 Ripstop – uncoated
1.1 Ripstop with DWR – DIYGS
Momentum 90 - Pertex Quantum - Pertex Microlight Eco
How does the breathability/water and wind resistance compare amongst them? Is there much difference between the DWR 1.1 and the M90? I am finding it very difficult to compare these fabrics.
I was thinking of aking dual fabric sock with uncoated 1.1 top and a coated bottom, but then I see commercial versions that use all uncoated (or M90) material. Would the DWR nylon really have condensation issues?
To make matters worse there is also the newer materials -
Where do they fit in?
I was under the impression that magna's 1.1acu (really 1.0) was stronger than most 1.1's. i haven't seen any real tests though. Definitely didn't hear until now that it was weaker.
Also I am hoping someone try's out ti-goats nobul1 as a winter sock. I don't see any reference as it being ripstop though.
I have a quilt from HG in the nobul2 and it seems pretty breathable but not as much as regular 1.1 used. I only have anecdotal data, I see it takes longer to loft up than regular nylon.
As for a group buy from alibaba, I would be down for 15 yards.
"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubt" -BR-.
I've got a hiking buddy who's approx 6'1" & 225lbs. He has a dozen or more nights in a single layer hammock made a from this exact fabric. I know it's the Magna Fabric 30d ACU because I cut it off my roll. Seems to me that this fabric has been working as well, if not better than any other 1.1oz ripstop. I saw it again this past weekend. It was being used by my buddy's much lighter son, but still appears to be holding up quite well.
I've only used it once or twice in single layer hammock and so far I haven't had any feedback on those particular projects. Usually, that's a good thing. Most of the time, folks are ordering double layers or using this in combination with other fabrics.
Back to Hammock Socks. This fabric is a little looser and more breathable than some of the other 1.1 ripstops out there. A sock from this fabric would be highly breathable, but likely not very windproof.
My trepidation came from handling the material, yanking on it, etc. I completely defer to Randy's knowledge of those with real world experience in the field.
Also, if you make a single layer hammock and find there is too much stretch to your liking, it's easy to add another layer.
"Life is a Project!"
Shug has the most pertinent point, I think, that the critical source of condensation is respiration, which occurs in the top-most part of the enclosure around the head.
I'd not want to trap that moisture myself so am back to the idea of venting, which is the perennial issue with cold weather anyway, balancing dead air space with enough ventilation (moving air) to keep the insulation dry enough to do its job in creating dead air!!! LOL
Now, in winter I sleep with the window cracked even in the coldest weather. Only when I lived in Maine did I seal the house up ... but it was 100 years old so breathed a-plenty.
It seems that a two-part system might be best, a DWR on the bottom and a more permeable fabric on the top. Wool just makes me feel warm and can be had in some pretty tight weaves. Just thinking out loud here ...
Good idea, Mike. I was going to suggest the same thing. I use Pertex for the top layer and ripstop for the lower one, but I go one further and extend the central section down to the ground for a small footprint. The bottom section is silnylon. I like to use a vertical side entry zipper, so I can sit up to put on my shoes then step forward out of the sock. (I guess with a footprint it's more of a "hammock sock-tent".) The need for actual venting will depend on atmospheric conditions as well as body temperature and metabolism, but also on the volume of the sock. A very small space will more likely need to be vented.
The 10d fabric Ti goat has would be good for a sock. Cheap and light. Don't use for down project though.
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